COMMUNICATION Selective Promotion of CO₂-to-Fuels Conversion by Tuning Catalyst Mesostructure
Name
Manuscript_Angew_Revisions_Final.pdf
Size
1.11 MB
Format
Adobe PDF
Checksum (MD5)
9b13be8dce72f7c33aedd1af424336fb
Author(s)
Yoon, Youngmin
Hall, Anthony Shoji
Surendranath, Yogesh
Alternative Title
Tuning of Silver Catalyst Mesostructure Promotes Selective Carbon Dioxide Conversion into Fuels
Date Issued
November 2016
Journal
Angewandte Chemie International Edition
Publisher
Wiley Blackwell
Citation
Yoon, Youngmin et al. “Tuning of Silver Catalyst Mesostructure Promotes Selective Carbon Dioxide Conversion into Fuels.” Angewandte Chemie International Edition 55, 49 (November 2016): 15282–15286 © 2016 Wiley-VCH Verlag
Version
Original manuscript
Abstract
An electrode's performance for catalytic CO₂ conversion to fuels is a complex convolution of surface structure and transport effects. Using well‐defined mesostructured silver inverse opal (Ag‐IO) electrodes, it is demonstrated that mesostructure‐induced transport limitations alone serve to increase the turnover frequency for CO₂ activation per unit area, while simultaneously improving reaction selectivity. The specific activity for catalyzed CO evolution systematically rises by three‐fold and the specific activity for catalyzed H₂ evolution systematically declines by ten‐fold with increasing mesostructural roughness of Ag‐IOs. By exploiting the compounding influence of both of these effects, we demonstrate that mesostructure, rather than surface structure, can be used to tune CO evolution selectivity from less than 5 % to more than 80 %. These results establish electrode mesostructuring as a powerful complementary tool for tuning both catalyst selectivity and efficiency for CO₂ conversion into fuels. Keywords: CO₂ reduction; electrocatalysis; mesoporous materials; mass transport; renewable energy
MIT Department
Massachusetts Institute of Technology. Department of Chemistry
Massachusetts Institute of Technology. Department of Materials Science and Engineering
Terms of Use
Creative Commons Attribution-Noncommercial-Share Alike
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1002/anie.201607942
